Wrench.



L. E. GRONKOWSKI.

WRENCH.

PPLIoATIoN FILED JUNE 2a, 1911.

1,047,046. Patented De.10,1912.

2 sums-SHEET 1.

till further modification.

WRENCH.

ASpeeiieatioi'i of Letters Patent.

Patented Dee. 10, 191 2.

Application led June 28, 1911-. Serial No. 635,736.

'10 vention is to provide a Wrench having one l of its ends'formed with a head block ory frame which is so arranged as tosupport and guide a pair of movable jaws, said jaws having actuating mechanism whereby each of the said jaws are simultaneously drawn toward each other or sdeparated a's desired.

W'ith the above objects in view, and others which will appear as the nature of the invention progresses,` the improvement resides in the novel construction and arrangement of parts hereinafter fully described and claimed. f

In the d nwings, accompanying this specification, there has been illustrated a simple and preferred embodiment ot' the improvement, andi'in which drawings,-

Figure l is a front elevation of a wrench eonstructedfin accordance Awith the present invention. Fig. 2 is a vertical sectional 3S view/upon the line 2-2 of Fig. l. Fig. 3

is a/horizontal sectional view taken approxiina/ely central of the frame of the wrench. F`g. 4 is a fiont 'elevation of another forni o the Wrench.l Fig. 5 is a similar view of a Fig. 6 is an elevationv-of another i'i'iodilication. Fig. 7 is an el vat-ion of a still further modified' forni of t/li device. Fig. 8 is a side elevation of the Wrench.

#he improved wrench comprises a rod 1 having itsupper extremity formed with an /Qf-set portion 2, the said rod 1 and off-set lforming the handle for the wrench. This /hndle may be either integrally 'connected with a head or frame or may be removably "secured thereto as desired. The frame 3 y,is of a substantially rectangular formation, the same comprising side member 4 Whlch, as illust-rated in the side elevat n, prefer,-

ably have their opppsite `ends bifurcated,

flattened metal, While the upper member 6 ment when the screw is rotated.

is centrally formed with alongitudinally extending tongue 7, and spaced away from the said tongue adjacent the opposite fac-s thereof, the member 6 is formed with downwardly extending longitudinally projecting flanges S. The. upper longitudinal member 6 is preferably formed with an upstanding yoke 9, said yoke having a suitable opening which alines with a similar opening in the member 6. Both of these openings are angular and are adapted to receive the angular extension of the rod 1. As heretofore stated, the rod may be integrally formed with the frame if desired or may be ot' a construction as above described.

The side members 4 terminatev approximately central ofthe lower longitudinal connecting member 5, as clearly illustrated in the figures of the drawings, and the said side .members are, each prmv'idedwith suitable registering depressions which are adaptn ed to receive the ends of :i screw l0. This screw l0 is provided with a milled head 1'1, the same being of a circular formation, and, as illustrated in Figs. 1, 4, 5 and (l of the drawings, is arranged centrally of the screw l0. The portions of the screw extending from the opposite sides of the milled head 11 have. their teeth arranged at an opposite pitch, the purpose of which will jnesentlyy be set forth. I

The numerals l2 and 1? ilesignate the sliding jaws forthe device. '.l`hese jaws are formed with threaded openings which are adapted to be engaged by the oppositely pitched threads of the screw 1t), and whereby upon the rotation of thc said screw, the

either toward or away from each other.

ln Figs. l to 3 of the drawings, theI jaws l2 and 13 are formed with lower openings 1G and 1 7, of a size and shape correspondingl to the cross sectional form of the lower longitudinal member 5 of the frame'. The upper extren'iities of the aws are bifurcated as at v18 so as to'engage the opposite faces ofthe tongue 7, while the outer faces of the upper'portion of the jaws are reduced so'as to engage within the grooves formed' between tlie tongue 7 andthe tlanges S. By this arrangement it ,will be noted that the jaws are effectively guided in their inoverlhe lower extremity of the jaws l2. and 13 are enlarged, 4the said enlarged portions providjaws will be caused to travel simultaneously v upper extremity of the jaws is bifurcated to engage with the tongue-7 ofthe frame 7.' noted hat By thisarrangement it will be the shoulders formed by the enlarged ortions of the jaws 12 .and 13 at all times A contact with the under face-,of the member 5 of the frame, so that the strain upon the screw 10 aswell' as the threaded openings of the jaws is effectively relieved.

1n Fig. 5 the device 1s substantially similar tothat described in connection with Fig. l, except that the bifurcated extremities of the jaws l2a and 13a are not formed with the reduced extensions which engage with the pocket formed between the ton ie and the flanges of theA up er member o the frame. In thisgure-the langes are also disposed of.

1n" Fi 6 the'device is also similar to that set fort in connection with' Fig. 1 the difference in thiscase being that the inner faces of thejaws are formed with cut away portions 19, the said cut away portions being arranged adjacent the milled head of the screw, and t-he said cut away ort-ions forming pockets whereby the sait jaws may be brought tightlyinto engagement with each other. y 5

In Fig. 7 the frame 2O is orovidedwith a transverse bar 21, the same eing connected to the side members of the said frame and arranged'a distance below the top connecting member thereof. The lower connect-ing member 22 is arranged in a arallel plane with the side members of the enlarged portions of the jaws underlie the position, contact with they A advantages thereof i j perfectly apparent to those skilled in the arf rame, and the said connecting member 22. In this instance one of the ,side members is formed with a depression 22 withinwliich is partially arranged the milled head 23 of the oppositely pitched screw 24.-' The jaw adjacent the milled head 23 isl recessed as at 25. The jaws 26 4,and 27 are provided with the vopenin j whereby they engage the bar 21 and the glwer connecting member 22 of the frame, and are', of course, provided with the oppositelyfpitched threaded o ei'iings for the rece tion of the screw 24. Eioth'the heads of te jaws 26 and 27 as well as the upper ends thereof lie dialso preferably rectly beneaththe.longitudinal bars ofthe frame, so that when the said-"awe are engaged with a nut, -bolt or the li te, the pressure upon the screw is effectively relieved.

From the above description, takenin connectionfwith the accompanying drawings,

the simplicity of the device, as well as1 the will,l itis thought, be

to which such inventions appertain, without further detailed description, it being un,` dei'stood that changes as to size, shape, proportion, material, etc., which fall Withi the i scope of the appended claim may be. re-

sorted to, i-f desired. j

Having thus described the inventiomwhat I claim is i Awrench comprising a substantially `re`ctangular frame, a pair of jaw members slidably mounted within said frame and adapted for engagement with each other', adjustable means for separating and closing said members, a shoulder formed on each jaw member, and a pair of shoulders formed onsaid frame and adapted for engagement with the shoulders on-the separation thereof to reverse the same.

In testimony whereof I ai'x my signature in presence of two Witnesses.v

Liso E. GnoNK'owsKi. lVitnesses HARRY LAUGHREY, A. J. STnicirLnn.

jaw members upon' 

